Modern Periodic Table

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Homework











In Class

Kahn's Academy - Valence Electrons

Kahn's Academy - Groups on the Periodic Table

The Periodic Table of Videos

• Watch 3 Videos for the elements in each Group.
• Take notes over their similar chemical properties
• If there is a broken link..go to Youtube and search for the video.

Homework






Review
Review Quiz *Don't do Question #10; it is incorrect.

General Science - Chapter 5

Question #1: Mendeleev arranged teh elements in his periodic table in order of
atomic number number of electrons mass number of neutrons

Question #2: Mendeleev's decision to leave gaps in his periodic table was supported by the discovery of
electrons protons argon gallium

Question #3: In a modern periodic table, elements are arranged in order of
atomic number number of isotopes atomic mass number of neutrons

Question #4: How many periods does the periodic table have
18 7 9 8

Question #5: An atomic mass unit is
one twelfth the mass of a carbon-12 atom the mass of a carbon-12 atom the mass of a neutron the mass of an electron

Question #6: An element that is shiny and conducts electric current is likely to be a
gas metal metalloid nonmetal

Question #7: Copper is an example of
an alkali metal an alkaline earth metal a non metal a transition metal

Question #8: Elements that have the same number of valence electrons are
in the same group in the same period called noble gases called transition metals

Question #9: The most reactive metals are the
transition metals alkaline earth metals alkali metals metalloids

Question #10: Which elements are all gases at room temperature
group 1

Resources
Interactive Periodic Table Activities

Interactive Periodic Table - Includes Electron Configurations

Simpler Periodic Table

Periodic Table and Review games

Videos about each element and the periodic table